Peters



(No Model.) J. W.` MGKINNON.

VENTILATGR. .0, 3 83v,313. Patented 'May 22, 1888.

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l ATEN JAMES V. MCKINNON, OF NEVARK, NEW JERSEY.

VENTI LATO FC.

SPECIFICATION forming part of Letters Patent No. 383,313, dated May 22l 1888.

Application filed February 2, i888. Serial No 262,718. (No model.)

.To all whom t may conceive:

Beit known that I, .Litres W. MoKiNNoN, a citizen of the United States, residing at Newark, in the county of Essex and State of New Jersey, havcinvented new and useful lmprovements in Ventilatore, of which the following is a specification.

My invention consists in a ventilator which is especially applicable to the saslies of windows. 4

It consists, essentially, in the combination with a base such as a window'sash-having transverse openings therein, of a hollow niovable ventilator placed over said openings, said ventilator haring in its back openings corresponding to the openings in the base, and a perforated front, all of which is more fully pointed out in the following specification and claims and illustrated in the accompanying drawings, in which- Figure l represents a sectional front elevation of my improved ventilator applied to the sash of a window. Fig. 2 is a horizontal Section in the plane c @Fig I. Fig. 3 is a section in the same plane, showing the ventilator closed. Fig. 4 is a vertical section in the plane i/ y, Fig. 2. Fig. 5 is a similar section in the plane f: s, Fig. 3.

Similar letters i ndieatc corresponding parts.

In the drawings, the letter A. designates a base, to which the ventilator B is applied. In the drawings I have shown said base to be the lower sash of a window; but the ventilator can be applied to a door, a wall, or other part of a structure. The ventilator B is made hollow or tubular in form, and in the ilat back thereof are formed one or more openings, b. Vhen several openings, as shown iu the drawings, are made in the back of the ventilator, they extend in a right line through the length of the same. The ventilator is closed at both ends, and provided with a partially or wholly perforated lfront, o, through which the air entering the openings b makes its exit. It can be secured to the sash A by the use of any suitable means which will permit it to move in the direction of its length. In the example illustrated in the drawings I show the ends of the ventilator mounted in sockets cl (l, secured to the woodwork of the sash A. In

the wood-work ofthe sash are formed open' ings c, corresponding in number and distance between them to the openings bin the back of the ventilator. The ventilator is secured to the sash directly over the openings a by the sockets cl d, previously described. v

On inspection of Figs. 1,2, and 3 it will be seen that when the openings b in the back of the ventilator are in line with the openings a in the sash the air can pass freely into the ventilator, and subsequently through its perforated front into the room; but when the ventilator is shifted in the direction of arrow 1, Fig. 2, until its end comes into Contact with the end of the socket d, Figs. 3 and 5, the openings b are closed by the back of the ventilator and the ingress of air is obstructed.

To thoroughly distribute the air throughout the body of the ventilator, so that it will issue from all points thereof, and not only at portions directly opposite the openings b therein, the portions e opposite the openings b are not perforated, but left solid, so as to deflect the air vin the direction of the length ofthe ventilator.

In applying my ventilators to windows I usually place a ventilator directly on the lower portion of the lower sash and a ventilator (not shown) on the upper portion of the upper sash. In the lower ventilator the perforations c are arranged to extend over the upper curving portion ot' the front, so as to direct the air upward against the window-panes. In the upper ventilator the perforations are arranged in the lower portion of the front. It is obvious that instead of being perforated the front may be slotted or otherwise cut so as to permit the passage of air therethrough.

By directing a well-distributed current of cold air against the window-panes, as herein described, steaming and frosting of the windows are prevented, as suoli current counteracts the heat on the inside, and thereby prevents condensation.

Vhat I claim as new, and desire to secure by Letters Patent, is

l. The combination, with a base having transverse openings, of a movable hollow ven tilator having openings in its back correspondingto the openings in the hase, and a perfo-v rated frout, substantially as shown and described.

2. The combination, with a base having sponding to the openings in the base, anda transverse openings a, of a movable hollow front having solid portions opposite the open' ventilator, B, closed at both ends, said ventiings b, and perforated portions between said 15 lator having openings b in its back and persolid portions, substantially as shown and de- 5 forations in its front, and the sockets d d afscribed.

fixed to the base for securing the ventilator In testimony Whereofl havehereunto set my and permitting a movement of the same in hand and seal in the presence of two subscribthe direction of its length, substantially as ing Witnesses.

shown and described. JAMES W. MCKINNON. [L s] 1o 3. The combination, with a base having Vitnesses:

transverse openings, of a movable hollow ven- W. G. HAUFF,

tilator having openings b in its back eorre- E. F. KAsTENHUBnR. 

